Molluscicidal activity against Oncomelania hupensis of Ginkgo biloba

In search for molluscicidal active components, petroleum ether, ethyl acetate, ethanol, and water extracts from Ginkgo sarcotesta were evaluated against the snail Oncomelania hupensis. The bioassay-oriented showed that the activity concentrates in the petroleum ether extract (LD50 7.81 ppm). Ginkgolic acids, isolated from the petroleum ether extract, exhibited strong molluscicidal activity (LD50 1.49 ppm), gingkgolic acid C 15:1 having the strongest molluscicidal activity. (C) 2008 Elsevier B.V. All rights reserved.